Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Evaporator Temperature Sensor Circuit Short to Ground (P053511)

Toyota Corolla Cross (2022-2024) Service Manual / Vehicle Interior / Heating / Air Conditioning / Air Conditioning System (for Gasoline Model With Automatic Air Conditioning System) / Evaporator Temperature Sensor Circuit Short to Ground (P053511)

DESCRIPTION

The No. 1 cooler thermistor is installed to the evaporator in the air conditioner unit to detect the temperature of the cooled air that has passed through the evaporator, which is used to control the air conditioning system. It sends signals to the air conditioning amplifier assembly. The resistance of the No. 1 cooler thermistor changes in accordance with the temperature of the cooled air that has passed through the evaporator. As the temperature decreases, the resistance increases. As the temperature increases, the resistance decreases.

The air conditioning amplifier assembly applies voltage (5 V) to the No. 1 cooler thermistor and reads voltage changes as the resistance of the No. 1 cooler thermistor changes.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

P053511

Evaporator Temperature Sensor Circuit Short to Ground

Diagnosis Condition:

  • Ignition switch ON

Malfunction Status:

  • Short in evaporator temperature sensor circuit

Detection Time:

  • Continuously for 4 seconds or more
  • No. 1 cooler thermistor
  • Air conditioning harness assembly
  • Air conditioning amplifier assembly

Memorized

WIRING DIAGRAM

PROCEDURE

1.

READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Body Electrical > Air Conditioner > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Evaporator Fin Thermistor

No. 1 cooler thermistor

Min.: -327.68°C (-557.82°F)

Max.: 327.67°C (621.81°F)

Actual evaporator temperature displayed

No. 1 cooler thermistor circuit malfunction
Body Electrical > Air Conditioner > Data List

Tester Display

Evaporator Fin Thermistor

OK:

The display is as specified in the normal condition column.

OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

NG

2.

INSPECT NO. 1 COOLER THERMISTOR

Click here

NG

REPLACE NO. 1 COOLER THERMISTOR

OK

3.

INSPECT AIR CONDITIONING HARNESS ASSEMBLY

(a) Remove the air conditioning harness assembly.

Click here

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

z1-5 (SGA) or C-1 - Other terminals and body ground

Always

10 kΩ or higher

z1-6 (TEA) or C-2 - Other terminals and body ground

Always

10 kΩ or higher
OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

NG

REPLACE AIR CONDITIONING HARNESS ASSEMBLY

    READ NEXT:

     Evaporator Temperature Sensor Circuit Short to Battery or Open (P053515)

    DESCRIPTION The No. 1 cooler thermistor is installed to the evaporator in the air conditioner unit to detect the temperature of the cooled air that has passed through the evaporator, which is used to

     Compressor Solenoid Circuit Short to Ground or Open (P06A014)

    DESCRIPTION In this circuit, the compressor with pulley assembly receives refrigerant compression demand signals from the air conditioning amplifier assembly. Based on this signal, the compressor wi

     Lost Communication with ECM/PCM "A" Missing Message (U010087,...,U016387)

    DESCRIPTION These DTCs are stored when the CAN communication system is malfunctioning. DTC No. Detection Item DTC Detection Condition Trouble Area Memory U010087 Lost Com

    SEE MORE:

     Installation

    INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION) Procedure Part Name Code 1 BATTERY COOLING BLOWER ASSEMBLY G9230 - - 2 NO. 1 EV BATTERY INTAKE DUCT G92D1A - - - Tighten

     Removal

    REMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL) Procedure Part Name Code 1 SECURE VEHICLE - - - 2 SHIFT LOCK RELEASE BUTTON COVER

    © 2020-2024 Copyright www.tcorollacross.com